Had a flat battery (probably an alarm fault) and its left it with the immobiliser not recognising the key. P1614 IIRC. I'm hoping disconnecting the battery will solve it or I'll have to get it towed to the stealer. They want 100 quid just to look at it before applying any fix. Thieving gits.
if you need a new transponder i have a brand new one and lots of key chips ,try programming a new chip before buying transponder though